indices

indices — noun

1. the plural form of the noun index — used when referring to more than one index i

1.名詞B1
釋義

the plural form of the noun index — used when referring to more than one index in contexts such as book references, financial market listings, or mathematical notation.

例句

Trang checked the indices at the back of the book for the authors she cited.

plural form: indices = more than one index

The Nikkei 225 and the S&P 500 are major stock market indices that investors watch closely.

collocation: stock market indices

文法句型

always plural in this form

用法筆記

Indices is the standard plural form of index in formal and academic English, especially in publishing, finance, computing, and mathematics. In everyday conversation, the alternative plural indexes is also widely accepted and is becoming more common in general use. Choose indices for formal writing, and indexes for casual or general contexts.

常見錯誤

❌Please check the indices of the book for the topic.
✅Please check the index of the book for the topic.
💡Use index (singular) when referring to one book index; indices is only for two or more.